Re: Motor driven variac (fwd)

• To: tesla-at-poodle.pupman-dot-com
• Subject: Re: Motor driven variac (fwd)
• From: Tesla List <tesla-at-stic-dot-net>
• Date: Thu, 20 Mar 1997 23:34:13 -0600
• Approved: tesla-at-stic-dot-net

Subject: 
            Re: Motor driven variac (fwd)
       Date: 
            Thu, 20 Mar 1997 19:37:33 -0800
       From: 
            gene lambert <tesla-at-cyberverse-dot-com>
Organization: 
            Tesla Electric, LTD
         To: 
            Tesla List <tesla-at-pupman-dot-com>
 References: 
            1


Tesla List wrote:
> 
> Subject:
>         Re: Motor driven variac (fwd)
>   Date:
>         Thu, 20 Mar 1997 11:14:34 -0500 (EST)
>   From:
>         "Jason Edward Pecor" <pecorjas-at-pilot.msu.edu>
>     To:
>         tesla-at-pupman-dot-com (Tesla List)
> 
> What exactly does a Variac do?  Is it some sort of Spark Gap?

A variac can be considered a "Variable Transformer", hence, the name,
variac.

Variac are most commonly used to supply variable voltage to a device
connected to it. Why? well, sometimes the device might be in a "repair
status", and the technician might want to monitor power as he brings the
device slo-o-o-wly up to 120vac.
when I was a line technician, we used them to "bring up" brand new
computer power supply's. It was a easy way to detect problems with
backward electrolytics, etc. :-)

Gene Lambert

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